Provide an appropriate response.What is the name of a triangle with no equal sides?
A. scalene triangle
B. equilateral triangle
C. right triangle
D. isosceles triangle
Answer: A
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The following table shows the average rice yield Y, in tons per hectare, on Asian farms t years after 1980. Explain in practical terms the meaning of the slope of the regression equation. t 5 10 20 25Y 3.35 3.66 3.95 4.14? ?
A. Each year yield decreases by an average of 0.04 tons per hectare. B. Each year yield increases by an average of 0.04 tons per hectare. C. Each year yield increases by an average of 0.52 tons per hectare. D. Each year yield decreases by an average of 0.52 tons per hectare.
Find 
and 
.f(x, y) = x3 - 7x2y + 2xy3
A. 
= 3x2 + 2xy + 2y3; 
= -7x2 + 3xy2
B. 
= 3x2 - 14xy + 2y3; 
= -7x2 + 6xy2
C. 
= x2 - 7xy + 2y3; 
= -7x2 + 2xy2
D. 
= 3x2; 
= -7x2 + 6xy2
Solve the problem.six painters can paint four rooms in 7 hours. How many rooms can a painter paint in 1 hour?
A. 
of a room
B. 28 rooms
C. 
of a room
D. 
of a room
Solve the problem.The BBQ committee always orders one pound of ribs for each person who signs up for the Homecoming BBQ, plus 19 extra pounds of ribs. If the committee ordered 120 pounds of ribs this year, find the number of people who signed up for the BBQ.
A. 120 people B. 19 people C. 139 people D. 101 people